Frequently Asked Questions
A: For perimeter security (fence-line) locations, we recommend LED products that can provide uniform light levels to minimize shadows and high CRI levels to make it easier to recognize colors and facial features across a narrow application space. The main concern at fence-line security points does not normally come from inside the facility but outside, where people will often try to throw contraband over the fence or plant materials along the fence-line. The lighting must work with the cameras to record facial features, colors and readable license plates, making it possible to not only recognize a threat but also to apprehend offenders who violate security at correctional facilities. Our recommendation is the ATB2 or ATB0 Roadway LED, because of their effectiveness at maintaining high levels of illumination in this type of application space. Specify either of these AEL® luminaires with a type 2 or 3 asymmetrical light distribution. For building perimeter security, a product with an effective symmetrical distribution for larger areas works best. Combining the light beams in an overlapping pattern will illuminate higher traffic areas at night to increase security camera effectiveness. In this case a floodlighting product like the Holophane Predator® LED in small, medium or large (depending on the application space) is recommended.
A: Yes, they are designed for one-for-one replacement of HPS fixtures. It is recommended that specifiers conduct lighting calculations to determine if the replacement meets required light levels.
A: Lowering devices are recommended for mounting luminaires 80 to 120 feet in the air on high-mast pole assemblies. Using lowering devices adds a level of convenience for maintenance personnel. When it’s time to inspect lighting equipment or conduct routine maintenance, the operator simply lowers the fixture ring down to ground level, by way of a machine-operated winch control, providing easy access to the lighting. There aren’t any issues with this type of system. Holophane sales and support personnel can assist customers through the installation process.